package org.jbit.news.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginCheckFilter implements Filter {

	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request2=(HttpServletRequest) request;
		HttpServletResponse response2=(HttpServletResponse) response;
		HttpSession session=request2.getSession(false);
		if (session !=null&&session.getAttribute("loginUser")!=null) {
			chain.doFilter(request, response);
		}else {
			response2.sendRedirect(request2.getContextPath()+"/index.jsp");
		}
		
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}
